What does xylol mean?
Xylol is the technical name for a combustible, colorless liquid made up chiefly of three closely related aromatic hydrocarbons: ortho-, meta-, and para-xylene, all positional isomers of dimethylbenzene. The word is used mainly in petroleum refining, chemical manufacture, and laboratory or industrial solvent contexts rather than in everyday speech. Refineries obtain xylol from heavy aromatic feedstocks and separate it into its individual isomers; para-xylene is especially important as a starting material for polyester-related chemicals. Because the commercial product is normally a mixture, xylol should not be treated as the name of one single molecular structure, although the term is sometimes used loosely or interchangeably with xylene. Its usefulness lies in both its solvent power for oily and resinous materials and its role as an industrial intermediate. For general readers, xylol chiefly signals a specialized chemical familiar from refining, plastics, solvents, and safety documentation.
nounA colorless, flammable, aromatic hydrocarbon liquid consisting chiefly of the three dimethylbenzene isomers: ortho-, meta-, and para-xylene. It is used as an industrial solvent and as a feedstock for producing chemicals such as terephthalic acid.
- A commercial liquid mixture of the three positional isomers of dimethylbenzene, used as an industrial solvent and chemical feedstock.
"The refinery recovered xylol from heavy aromatic fractions and separated its individual isomers."
"The refinery recovered xylol from heavy aromatic fractions and separated its individual isomers."
"The laboratory used xylol to dissolve the oily residue on the glassware."
Rare and usually restricted to distinct batches, formulations, or samples; xylol is normally used as a mass noun.
"The laboratory compared xylols obtained from two different refining processes."
Xylol may sound like one chemical, but industrial xylol is a trio: ortho-, meta-, and para-xylene.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of xylol
The name belongs to the xylene family: xylene itself combines the Greek xylon, meaning “wood,” with the chemical suffix -ene. The -yl derivative xylyl and the amine xylidine were likewise formed within this naming system. Xylol developed as an alternative name for xylene or for its commercial mixture of isomers.
How xylol is actually used
The word is specialized and usually formal, appearing in chemical, petroleum-refining, and industrial-safety documentation. Ordinary-language alternatives are rarely exact.
Easily confused with xylol
The names are often used interchangeably in chemical commerce; xylol traditionally emphasizes the mixed isomeric product, while xylene can also refer to a specific dimethylbenzene isomer.